3501 SR 529 2016-01-01 MF Import

PORT OF EVERETT UNION SLOUGH MARSH MITIGATION ' :17\:iliQtl�►1� 11 [7 SECTION INCLUDES SECTION 01030 F[ELD ENGINEERING Conswction staking requ'a�d by CONTRACTOR Maintaining surveys, flag�ings, and ste{dngs provided by the PORT. GENERAL Except as provided in the suppkmental conditions, the CONfRACTOR is rosponsible for all construction surveying. During the course of the construction, the CONTRACTOR shall make availabk a person to help the ENGINEER with field chxiting of grades and control as may be necessazy to assure proper construction. The CONTRACTOR shall ensure a surveyina, accuracy within the following tolerances: Slope stakes Stationing an berm Alignment on berm Surfacing grade stakes Vtrtical ± 0.02 �`eet N/P N/A t0.1 feet • "- " '- ± 1.0 foot 30.1 foot t0.1 foot 30.5 feet (Pazallel to alignment) 30.1 fret (nomial to alignment) The Conaacting Agency may spot-check the CONTRACTOR's surveying. These spot- checks will not change the requ'vements for nomial checking by the CONTRACI'OR. When staking berm aligrutunt and stationing, the CONTRACfOR shall perform independent chxks from different secondazy convol to ensure that the points staked aze within the specified survey accuracy tolerances. The eurvey work shall include but not be limited to the following: Verify the primary horizontal and vertical control fiunished by the OWNER, and expand into secondary control by adding stakes and hubs as well as additional survey control needed for the project. Provide descriptions of secondary conaol to the OWNER. 2. EstabGsh, the centerlines of all aligrunents, by placing hubs, stakes, or mazks on centerline or on offsets to centerline at all curve points (PCs, PTs, and Pis) and at points on the aGgmnents spaced no fiuther than 50 feet. 01030-1